fix: Re-Add psr/http-message, client, factory standards

Author: ralflang

.horde.yml

@@ -38,6 +38,9 @@ dependencies:
     composer:
       horde/exception: ^3
       horde/support: ^3
+      psr/http-message: ^2
+      psr/http-factory: ^1.0.2
+      psr/http-client: ^1.0.3
   dev:
     composer:
       horde/test: ^3